The Marine Chronometer: Its History and Development

accordingly action adjustment Admiralty alteration amount appears arbor Arnold Auxiliary compensation balance spring balance staff balance-spring Berthoud bi-metallic strip Board of Longitude box chronometers brass Breguet carried centre chrono chronometer escapement chronometer makers clock Clockmakers compensation balance compensation curb considerably construction correct cross-bar cylinder escapement daily rate Dent dial discharging pallet Earnshaw effect employed escape wheel Ferdinand Berthoud fitted friction fusee gimbals going barrel Greenwich hand Harrison Horological impulse pallet invention inventor isochronism Kullberg latter lever escapement locking M.T. error machine mainspring marine chronometer marine timekeeper Maskelyne means mechanism meter method minute modern chronometer moment of inertia motion movement Mudge Mudge's Observatory obtained ordinary pattern passing spring patented pendulum pinion pocket chronometers position practically remontoire reward rims roller Roy's Royal Observatory screws ship shown in fig slightly steel teeth temperature Thomas Earnshaw tooth top-plate trial numbers Ulrich unlocking vibration voyage watch winding